YELLOW OR YELLOWISH FLOWERS 
GROUP IV 
Leaves opposite. Flowers not with five petals, five-lobed corolla, 
or two-lipped corolla. 
Wild Sunflower {Helianthus decapetalus) . Composite 
family. August to September. 
A perennial, one and one-half to several feet high. The flowers, 
two inches broad, have ten or twelve neutral rays and a yellow 
centre (disk) of tubular florets with pistils and stamens (perfect). 
The involucre (the green support which, in the Composite 
family, holds the flower-head) has long and spreading bracts. 
The leaves, mostly opposite, are three inches long, broadly 
lance-shaped, rough, more or less three-nerved, with leaf-stalks. 
TUBER, FLOWER-HEAD, DISK-FLOWER, 
RAY-FLOWER AND LOWER LEAVE 5 
OF JERUSALEM ARTICHOKE 
Moist banks. Woodland Sunflower {H. divaricatus) is similar 
but its leaves are attached directly to the stem. Dry woods, 
blooming earlier. 
Jerusalem Artichoke (ff. tuherosiis), a remnant of Indian 
horticulture, is six feet high or over, otherwise generally similar. 
The hairy stem rises from a root-stalk which bears edible tubers. 
Its lower leaves, opposite, with leaf-stalks, average six inches 
long, its flowers two or three inches broad. Moist ground. 
